mraa: Fix build on x86 32bit

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/mraa/mraa/0001-cmake-Use-a-regular-expression-to-match-x86-architec.patch

@@ -0,0 +1,35 @@
+From 5de183dc436bb647361ab641d891c113e6a7dadd Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 8 Mar 2020 16:30:48 -0700
+Subject: [PATCH] cmake: Use a regular expression to match x86 architectures
+
+in OE we use i686 for qemux86 and this results in
+
+-- INFO - Target arch is i686
+CMake Error at CMakeLists.txt:191 (message):
+  Only x86, arm, mips, PERIPHERALMAN and mock platforms currently supported
+
+So using a wildcard helps in using any x86 arch
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ CMakeLists.txt | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 250d9106..fb642722 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -176,8 +176,7 @@ else ()
+   message (STATUS "INFO - Override arch is ${DETECTED_ARCH}")
+ endif()
+ 
+-if (DETECTED_ARCH STREQUAL "i586" OR DETECTED_ARCH STREQUAL "x86_64"
+-    OR DETECTED_ARCH STREQUAL "i386")
++if (DETECTED_ARCH MATCHES "i?86" OR DETECTED_ARCH STREQUAL "x86_64")
+   set (X86PLAT ON)
+ elseif (DETECTED_ARCH MATCHES "arm.*" OR DETECTED_ARCH MATCHES "aarch64")
+   set (ARMPLAT ON)
+-- 
+2.25.1
+

meta-oe/recipes-extended/mraa/mraa_git.bb

@@ -9,6 +9,7 @@ SRCREV = "e15ce6fbc76148ba8835adc92196b0d0a3f245e7"
 PV = "2.1.0+git${SRCPV}"
 
 SRC_URI = "git://github.com/eclipse/${BPN}.git;protocol=http \
+           file://0001-cmake-Use-a-regular-expression-to-match-x86-architec.patch \
            "
 
 S = "${WORKDIR}/git"
@@ -60,3 +61,5 @@ RDEPENDS_node-${PN} += "nodejs"
 ### Include desired language bindings ###
 PACKAGES =+ "${@bb.utils.contains('BINDINGS', 'nodejs', 'node-${PN}', '', d)}"
 PACKAGES =+ "${@bb.utils.contains('BINDINGS', 'python', '${PYTHON_PN}-${PN}', '', d)}"
+
+TOOLCHAIN = "gcc"